class Settings:
    """存储游戏设置的类"""
    def __init__(self):
        """初始化游戏的设置"""
        # 屏幕设置
        self.screen_width = 1200
        self.screen_height = 800
        # self.bg_color = (0, 191, 255)
        self.bg_color = (230, 230, 230)
        self.ship_speed = 1.5
        self.ship_limit = 3

        # ⼦弹设置
        self.bullet_speed = 2.0
        self.bullet_width = 300
        self.bullet_height = 15
        self.bullet_color = (60, 60, 60)
        self.bullets_allowed = 3

        # 外星⼈设置
        self.alien_speed = 1.0
        self.alien_init_num = 3

        self.fleet_drop_speed = 10
        # fleet_direction 为 1 表⽰向右移动，为-1 表⽰向左移动
        self.fleet_direction = 1

        self.kill_count = 3

        # 以什么速度加快游戏的节奏
        self.speedup_scale = 10

        # 外星⼈分数的提⾼速度
        self.score_scale = 1.5



        self.initialize_dynamic_settings()

    def initialize_dynamic_settings(self):
        """初始化随游戏进⾏⽽变化的设置"""
        self.ship_speed = 1.5
        self.bullet_speed = 2.5
        self.alien_speed = 1.0
        # fleet_direction 为 1 表⽰向右，为-1 表⽰向左
        self.fleet_direction = 1
        # 记分设置
        self.alien_points = 50
    
    def increase_speed(self):
        """提⾼速度设置的值"""
        self.ship_speed *= self.speedup_scale
        self.bullet_speed *= self.speedup_scale
        self.alien_speed *= self.speedup_scale

        self.alien_points = int(self.alien_points * self.score_scale)